CN106894811B - Correcting unit of oil field rock core geologic body appearance - Google Patents

Correcting unit of oil field rock core geologic body appearance Download PDF

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Publication number
CN106894811B
CN106894811B CN201710094169.1A CN201710094169A CN106894811B CN 106894811 B CN106894811 B CN 106894811B CN 201710094169 A CN201710094169 A CN 201710094169A CN 106894811 B CN106894811 B CN 106894811B
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China
Prior art keywords
core
fixed
shaft
slider
sliding rail
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CN201710094169.1A
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CN106894811A (en
Inventor
孙雯婧
邹娟
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Shandong Hepeng Technology Co., Ltd
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Song Xiecui
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Priority to CN201310573370.XA priority Critical patent/CN104653133B/en
Priority to CN201710094169.1A priority patent/CN106894811B/en
Publication of CN106894811A publication Critical patent/CN106894811A/en
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Publication of CN106894811B publication Critical patent/CN106894811B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/02Determining slope or direction
    • E21B47/026Determining slope or direction of penetrated ground layers
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • E21B25/005Above ground means for handling the core, e.g. for extracting the core from the core barrel
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002Active optical surveying means

Abstract

The invention relates to a correction device for the geologic body occurrence of an oil field core. The technical scheme is as follows: the azimuth angle data and the fixed sliding rail are calibrated on the outer side of the base, a fixed shaft is arranged in the center, a rotating shaft is arranged outside the fixed shaft, a borehole angle measurer capable of measuring the borehole angle of the rock core is arranged on the rotating shaft, and a horizontal laser transmitter is arranged at the top of the rotating shaft; the sliding rail on the base is matched with a slider at the lower end of the telescopic shaft, the upper end of the telescopic shaft is connected with a fixed support, a core barrel is fixed on the fixed support, a rock core is arranged in the core barrel, a well inclination angle pointer is arranged at the inner end of the fixed support, a core barrel rotating handle is arranged at the outer end of the fixed support, and a well inclination azimuth angle pointer is arranged on the slider. The beneficial effects are that: the core orientation marking device has the advantages of reasonable design, simple structure, easy processing and manufacturing, convenient storage and maintenance of the oil field core library, convenient use and simple operation, can accurately determine the occurrence of the core geologic body, and can also perform orientation marking on the core in the inclined shaft.

Description

Correcting unit of oil field rock core geologic body appearance
Technical Field
The invention relates to a correction device for core and geologic body occurrence in an inclined shaft, in particular to a correction device for core and geologic body occurrence in an oil field.
Background
The geologic body refers to natural rocks or soil bodies with various causes, and the occurrence of the geologic body refers to the trend and tendency of the geologic body, the contact relationship between the geologic body and surrounding rocks, and the like. The set of parameters of the geologic body, and the shape of the geologic body refers to the physical quantities of the boundary, size, area, etc. of an object. In general, in the field, the geologic body is difficult to be completely exposed to the surface and is generally described by the occurrence of the disease. At present, in oil field exploitation, many coring wells of an oil field are inclined wells, and most cores are subjected to non-directional coring. In the inclined shaft, after the core is taken out, the core is generally oriented by using paleogeomagnetism, but information of the paleogeomagnetism in sedimentary rock is weak, and whether the paleogeomagnetism is suitable for the core orientation in the inclined shaft is also controversial [ documents: li schsen, wuhanning, zhaohao, et al, ancient geomagnetism method of drilling core redirection and its reliability analysis [ J ] oil and gas geophysical, 2006,4(2): 27-32 ], in addition ancient geomagnetism is expensive and not suitable for orientation of a large number of cores; in addition, many oil field workers and geologists directly orient the geologic body observed by the core according to the processing method of the vertical well, and in practice, when the inclination angle of the well is large, the real occurrence of the geologic body is difficult to obtain.
Disclosure of Invention
The invention aims to provide a correction device for the geologic body occurrence of an oil field core aiming at the defects in the prior art.
The technical scheme is as follows: the device comprises a base, a fixed shaft, a rotating shaft, a well inclination angle measurer, a horizontal laser transmitter, a core barrel, a core barrel rotating handle, a fixed support, a telescopic shaft, a slider, a well inclination azimuth pointer, a sliding rail, azimuth data and a well inclination angle pointer; the azimuth angle data and the fixed sliding rail are calibrated on the outer side of the base, a fixed shaft is arranged in the center, a rotating shaft is arranged outside the fixed shaft, a borehole angle measurer capable of measuring the borehole angle of the rock core is arranged on the rotating shaft, and a horizontal laser transmitter is arranged at the top of the rotating shaft; the sliding rail on the base is matched with a slider at the lower end of the telescopic shaft, the upper end of the telescopic shaft is connected with a fixed support, a core barrel is fixed on the fixed support, a core is arranged in the core barrel, a well inclination angle pointer is arranged at the inner end of the fixed support, a core barrel rotating handle is arranged at the outer end of the fixed support, a well inclination azimuth angle pointer is arranged on the slider, and an azimuth angle indicated by the well inclination azimuth angle pointer is opposite to a well inclination azimuth angle; the slider is of an arc-shaped structure, the top of the sliding rail is a convex part, and the slider is buckled and sleeved on the convex part of the sliding rail.
The rotating shaft is connected with the fixed shaft through a bearing, so that 360-degree rotation is realized.
The core barrel is composed of a plurality of steel bars, and the core is placed among the steel bars.
The shaft rotating shaft is arranged on the fixed support, so that the core barrel for holding the core can rotate on the fixed support.
And a telescopic shaft switch valve is arranged on the telescopic shaft to control the telescopic length of the telescopic shaft.
A slider switch valve is arranged between the slider and the sliding rail.
A use method of the correction device for the geologic body occurrence of the oil field core comprises the following steps:
a. determining a well deviation angle and a well deviation azimuth angle at the core position of the inclined shaft, and simultaneously determining the attitude of the stratum according to stratum logging information or a constructional diagram;
b. the orientation of the geologic body attitude corrector is righted, and the north direction on the base is consistent with the actual north direction;
c. the sliding device slides on the sliding rail, the well deviation azimuth pointer is adjusted to the opposite direction of the well deviation azimuth, so that the orientation of the core barrel is consistent with the real orientation of the core, and then the sliding device switch valve is closed;
d. adjusting the reading size of the inclination angle measurer to be consistent with the inclination angle through the telescopic shaft, and then closing a switch valve of the telescopic shaft;
e. determining the self track of the coring position, opening a steel bar of the core barrel, and putting the core into the core barrel;
f. rotating the handle through the core barrel to enable the inclination of the stratum to be consistent with the actual inclination of the stratum, so that the actual underground attitude of the core is determined;
g. starting a horizontal laser transmitter, horizontally rotating, sequentially marking and connecting laser points on the core, wherein the plane is a real horizontal plane, and simultaneously marking the north direction on the plane according to the azimuth angle on the base, so that the orientation of the core is realized;
h. and determining the real occurrence of the geologic body observed by the core according to the determined north direction and horizontal plane.
The invention has the beneficial effects that: the instrument has the advantages of reasonable design, simple structure, easy processing and manufacturing, convenient storage and maintenance of the core library of the oil field, convenient use and simple operation, can accurately determine the attitude of the core geologic body by utilizing the attitude correction device of the unoriented coring geologic body in the inclined shaft, can directionally mark the core in the inclined shaft by core library staff after working, can realize ground orientation of the unoriented core of the core library, is not only beneficial to geological workers to develop work in the core library later, but also can greatly save the cost of the oil field in the aspect of core orientation, and the instrument can become necessary articles of the core library of the oil field.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a slide rail of the present invention;
in the upper diagram: the device comprises a base 1, a fixed shaft 2, a rotating shaft 3, a well inclination angle measurer 4, a horizontal laser transmitter 5, a fixed screw 6, a shaft rotating shaft 7, a core barrel 8, an upper strata layer 9 of the core, a core 10, a core barrel rotating handle 11, a bearing 12, a fixed support 13, a telescopic shaft 14, a telescopic shaft switch valve 15, a slider 16, a well inclination azimuth pointer 17, a sliding rail 18, azimuth angle data 19, a well inclination angle pointer 20, a screw 21 and a slider switch valve 22.
Detailed Description
The invention will be further described with reference to the accompanying figures 1-2:
the device comprises a base 1, a fixed shaft 2, a rotating shaft 3, a well inclination angle measurer 4, a horizontal laser transmitter 5, a core barrel 8, a core 10, a core barrel rotating handle 11, a fixed support 13, a telescopic shaft 14, a slider 16, a well inclination azimuth pointer 17, a sliding rail 18, azimuth data 19 and a well inclination angle pointer 20; the method comprises the following steps that azimuth angle data 19 are calibrated on the outer side of a base 1 and a fixed sliding rail 18 is fixed, a fixed shaft 2 is arranged in the center, a rotating shaft 3 is arranged outside the fixed shaft, a well inclination angle measurer 4 capable of measuring a rock core well inclination angle is arranged on the rotating shaft 3, and the well inclination angle measurer 4 is fixed on the rotating shaft through a fixing screw 6; the horizontal laser emitter 5 is arranged at the top of the rotating shaft 3 and can emit horizontal laser in 360-degree rotation; the sliding rail 18 on the base 1 is matched with the slider 16 at the lower end of the telescopic shaft 14, the upper end of the telescopic shaft 14 is connected with the fixed support 13, the fixed support 13 is fixed with the core barrel 8, the core 10 is arranged in the core barrel 8, the upper part of the core is the bedding surface 9 of the stratum on the core, and the inner end of the fixed support 13 is provided with a bevel angle pointer 20 which rotates along with the rotation of the core barrel. The outer end of the fixed support 13 is provided with a core barrel rotating handle 11, the slider 16 is provided with a well deviation azimuth pointer 17, and the azimuth indicated by the well deviation azimuth pointer 17 is opposite to the well deviation azimuth.
The rotating shaft 3 is connected with the fixed shaft 2 through a bearing, so that 360-degree rotation is realized; the core barrel 8 is composed of a plurality of steel bars, and the core is placed between the steel bars.
Be equipped with pit shaft pivot 7 on foretell fixed bolster 13, guarantee that the core barrel 8 of dress rock core can rotate on fixed bolster 13, guarantee that the pit shaft of dress rock core can rotate on the support, this design can guarantee again that the rock core can not rotate too fast simultaneously because of the frictional force of pivot both sides.
The telescopic shaft 14 is provided with a telescopic shaft switch valve 15 for controlling the telescopic length of the telescopic shaft so as to adjust the size of the well inclination angle.
The slider 16 is of an arc-shaped structure, the top of the sliding rail 18 is a convex part, and the slider 16 is buckled on the convex part of the sliding rail 18.
A slider on-off valve 22 is provided between the slider 16 and the slide rail 18.
A use method of the correction device for the geologic body occurrence of the oil field core comprises the following steps:
a. determining a well deviation angle and a well deviation azimuth angle at the core position of the inclined shaft, and simultaneously determining the attitude of the stratum according to stratum logging information or a constructional diagram;
b. the orientation of the geologic body attitude corrector is righted, and the north direction on the base is consistent with the actual north direction;
c. the well deviation azimuth pointer 17 is adjusted to the opposite direction of the well deviation azimuth by sliding the slider 16 on the sliding rail 18, so that the orientation of the core barrel is consistent with the real orientation of the core, and then the slider switch valve 22 is closed;
d. the reading size of the well inclination angle measurer 4 is adjusted through the telescopic shaft 14 to be consistent with the well inclination angle, and then the telescopic shaft switch valve 15 is closed;
e. thus, the self track of the coring position is determined, the steel bar of the core barrel 8 is opened, and the core is put in;
f. the handle 11 is rotated through the core barrel, the core is rotated to enable the orientation of the stratum to be consistent with the actual orientation of the stratum, and therefore the actual underground attitude of the core is determined;
g. starting a horizontal laser transmitter 5, horizontally rotating, sequentially marking and connecting laser points on the core, wherein the plane is a real horizontal plane, and simultaneously marking the north direction on the plane according to the azimuth angle on the base, so that the orientation of the core is realized;
h. and determining the real occurrence of the geologic body observed by the core according to the determined north direction and horizontal plane.
The method is mainly used for orienting the geologic body according to the attitude of the stratum by simulating and recovering the real attitude of the core in the underground. Mainly comprises a base, a fixed shaft, a rotating shaft, a core barrel, a telescopic shaft, a slider and the like. The real azimuth angle of the core in the underground is recovered through the slider, the real inclination angle well deviation angle of the core in the underground is recovered through the telescopic shaft, then the core barrel is rotated to achieve the formation recovery, and the horizontal laser transmitter is used for determining the real horizontal plane and the north direction of the core in the underground, so that the orientation of the core geologic body is achieved.

Claims (3)

1. The utility model provides a correcting unit of oil field rock core geologic body appearance, includes base (1), fixed axle (2), rotation axis (3), a core section of thick bamboo (8), rock core (10), fixed bolster (13), azimuth data (19) and well oblique angle pointer (20), outside demarcation azimuth data (19) and fixed sliding rail (18) of base (1), the center is equipped with fixed axle (2), and the fixed axle is equipped with rotation axis (3) outward, fixed bolster (13) on be fixed with a core section of thick bamboo (8), be equipped with rock core (10) in a core section of thick bamboo (8), the inner of fixed bolster (13) is equipped with well oblique angle pointer (20), characterized by: the device also comprises a well deviation angle measurer (4), a horizontal laser transmitter (5), a core barrel rotating handle (11), a telescopic shaft (14), a slider (16), a well deviation azimuth pointer (17) and a sliding rail (18); a well inclination angle measurer (4) capable of measuring the well inclination angle of the rock core is arranged on the rotating shaft (3), and a horizontal laser transmitter (5) is arranged at the top of the rotating shaft (3); a sliding rail (18) on the base (1) is matched with a slider (16) at the lower end of a telescopic shaft (14), the upper end of the telescopic shaft (14) is connected with a fixed support (13), a core barrel rotating handle (11) is arranged at the outer end of the fixed support (13), a well deviation azimuth pointer (17) is arranged on the slider (16), and an azimuth indicated by the well deviation azimuth pointer (17) is opposite to a well deviation azimuth; the slider (16) is of an arc structure, the top of the sliding rail (18) is a convex part, and the slider (16) is buckled and sleeved on the convex part of the sliding rail (18);
the rotating shaft (3) is connected with the fixed shaft (2) through a bearing, so that 360-degree rotation is realized;
and a shaft rotating shaft (7) is arranged on the fixed support (13), so that the core barrel (8) for holding the core can rotate on the fixed support (13).
2. The oilfield core geologic body occurrence correction device of claim 1, wherein: and a telescopic shaft switch valve (15) is arranged on the telescopic shaft (14) to control the telescopic length of the telescopic shaft.
3. The oilfield core geologic body occurrence correction device of claim 1, wherein: a slider switch valve (22) is arranged between the slider (16) and the sliding rail (18).
CN201710094169.1A 2013-11-18 2013-11-18 Correcting unit of oil field rock core geologic body appearance Active CN106894811B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310573370.XA CN104653133B (en) 2013-11-18 2013-11-18 Occurrence correction device of non-directional centering geological body in inclined shaft
CN201710094169.1A CN106894811B (en) 2013-11-18 2013-11-18 Correcting unit of oil field rock core geologic body appearance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710094169.1A CN106894811B (en) 2013-11-18 2013-11-18 Correcting unit of oil field rock core geologic body appearance

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201310573370.XA Division CN104653133B (en) 2013-11-18 2013-11-18 Occurrence correction device of non-directional centering geological body in inclined shaft

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CN106894811A CN106894811A (en) 2017-06-27
CN106894811B true CN106894811B (en) 2020-04-21

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CN201310573370.XA Active CN104653133B (en) 2013-11-18 2013-11-18 Occurrence correction device of non-directional centering geological body in inclined shaft
CN201710094169.1A Active CN106894811B (en) 2013-11-18 2013-11-18 Correcting unit of oil field rock core geologic body appearance
CN201710092063.8A Expired - Fee Related CN106869841B (en) 2013-11-18 2013-11-18 The application method of the occurrence means for correcting of non-directional coring geologic body in a kind of inclined shaft

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US2089216A (en) * 1936-03-03 1937-08-10 Standard Oil Co California Apparatus for orienting cores
US2186677A (en) * 1936-06-03 1940-01-09 Humphreys Frank Goniometric device for determining the dip and strike of strata from bore-core
US2149715A (en) * 1937-06-07 1939-03-07 Sperry Sun Well Surveying Co Core orientation apparatus
US2260562A (en) * 1937-12-13 1941-10-28 Union Oil Co Process and apparatus for core sample orientation
US2594029A (en) * 1948-07-31 1952-04-22 Eastman Oil Well Survey Co Reading device for core orienting equipment
US2634317A (en) * 1950-02-24 1953-04-07 Joseph A Marchand Apparatus for determining the orientation of underground strata from core samples
US3331134A (en) * 1965-09-20 1967-07-18 Chevron Res Earth formation core protractor
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SU1027381A1 (en) * 1981-07-20 1983-07-07 Казахский Научно-Исследовательский Институт Минерального Сырья Monitor for direct
CN87212439U (en) * 1987-11-18 1988-11-09 冶金工业部马鞍山矿山研究院 Angle measurer for rock core reset
CN1106135A (en) * 1994-01-26 1995-08-02 滕秉义 Construction key element surveying instrument
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Publication number Publication date
CN104653133A (en) 2015-05-27
CN106869841A (en) 2017-06-20
CN106894811A (en) 2017-06-27
CN106869841B (en) 2018-12-11
CN104653133B (en) 2017-02-08

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